appsec-run-diagnostician

appsec-run-diagnostician is an agent for Claude Code from appsec-foundry/appsec-advisor. It costs 116 tokens per session (2,087 once invoked), scanned A, original, no licence file.

An internal diagnostic role that investigates issues reported after an application-security run. It decides whether each issue is a plugin defect, an environment problem, or an expected condition.

In plain words
What is it for?
It is used to inspect the run's issue file and explain each reported problem when diagnostics are requested.
Why use it?
It helps separate actual defects from problems caused by setup or normal behavior.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the appsec-advisor plugin — 28 skills, 3 commands, 20 agents, 8 hooks shipped together

Good fit It is used to inspect the run's issue file and explain each reported problem when diagnostics are requested.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/appsec-foundry/appsec-advisor/appsec-run-diagnostician
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/appsec-foundry/appsec-advisor

Made for: Claude Code.

Or install appsec-advisor, the plugin that ships this one along with the rest of its 28 skills, 3 commands, 20 agents, 8 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for appsec-run-diagnostician

README.md
[![agentmods](https://agentmods.dev/badge/agents/appsec-foundry/appsec-advisor/appsec-run-diagnostician/github.svg)](https://agentmods.dev/agents/appsec-foundry/appsec-advisor/appsec-run-diagnostician)
Your own site
<a href="https://agentmods.dev/agents/appsec-foundry/appsec-advisor/appsec-run-diagnostician"><img src="https://agentmods.dev/badge/agents/appsec-foundry/appsec-advisor/appsec-run-diagnostician/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for appsec-run-diagnostician

Your own site · 80×15
<a href="https://agentmods.dev/agents/appsec-foundry/appsec-advisor/appsec-run-diagnostician"><img src="https://agentmods.dev/badge/agents/appsec-foundry/appsec-advisor/appsec-run-diagnostician.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 116 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,087 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00116 $0.02087
Opus 5.5 $0.00046 $0.00835
Sonnet 5.5 $0.00023 $0.00417
Haiku 4.5 $0.00012 $0.00209

Measured 7d ago against content hash 5d74e3fd4fbb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

appsec-run-diagnostician scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/appsec-run-diagnostician.md · 129 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago Changed · +1 tokens per session 5d74e3fd4fbb
  2. 18d ago Changed · +1 lines c84de3860d64
  3. 22d ago Changed 0638d4de9d3d
  4. 1mo ago Changed · -3 lines · +5 tokens per session 0cb97333fca8
  5. 1mo ago Changed · -6 lines 60700dd8f6b6
  6. 1mo ago First seen · 137 lines · 110 tokens per session scan A a6db9c786b4c

Subscribe to this mod's changes

appsec-run-diagnostician is an agent published in the GitHub repository appsec-foundry/appsec-advisor (17 stars, last pushed yesterday), with no licence file. It adds 116 tokens to every session and 2,087 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.